MESON Chess Problem Database

Problem Display
PID: 222350 (6K1/1B4Q1/7B/6R1/5R2/Pn1k4/2b1pp2/4n2r w - - 0 1)

Musante, Horacio Luis

US Problem Bulletin, 1964

6K1/1B4Q1/7B/6R1/5R2/Pn1k4/2b1pp2/4n2r

#2

7 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Sa1
      • 2.Qd4#
    • 1...Sc1
      • 2.Qd4#
    • 1...Sd2
      • 2.Qd4#
    • 1...Sd4
      • 2.Qxd4#
    • 1...Sa5
      • 2.Qd4#
    • 1...Sc5
      • 2.Qd4#
  • Tries
    • 1.Rf3+?
      • 1...Kd2
        • 2.Rd5#
      • 1...Kc4
        • 2.Ba6#
        • 2.Rc3#
        • 2.Qc3#
      • 1...Sxf3!
    • 1.Rg3+?
      • 1...Kd2
        • 2.Rd4#
      • 1...Sf3!
    • 1.Rc5?
      • threat
        • 2.Qc3#
      • 1...Kd2
        • 2.Rd4#
      • 1...Ke3
        • 2.Rf3#
      • 1...Sxc5
        • 2.Qd4#
      • 1...Sd4
        • 2.Rxd4#
        • 2.Qxd4#
      • 1...Rg1!
    • 1.Rd5+?
      • 1...Sd4
        • 2.Qxd4#
      • 1...Ke3!
  • Keys
    • 1.Rc4!
      • threat
        • 2.Qc3#
      • 1...Kd2
        • 2.Rd5#
      • 1...Ke3
        • 2.Rg3#
      • 1...Kxc4
        • 2.Ba6#
      • 1...Sd4
        • 2.Qxd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 5
  • Sets
    • S(f);N_GUARD::QAR1(F)
    • S(f);N_GUARD,SBLOCK::QAR1(F)
    • S(f);N_GUARD::QAR1(F),XS(f)
  • Tries
    • Try
      • R(B);CHECK
      • Vars
        • K(g);P-FLIGHT::B(D)+R(C),DCHECK
      • Refutation
        • S(a);XR(B)
    • Try
      • R(C);CHECK
      • Vars
        • K(g);P-FLIGHT::B(D)+R(B),DCHECK
      • Refutation
        • S(a);P_SPINS(a)
    • Try
      • R(C);
      • Threat
        • QAR1(F)
      • Vars
        • K(g);P-FLIGHT::B(D)+R(B),DCHECK
        • S(f);N_GUARD,XR(C)::QAR1(F)
      • Refutation
        • R(b);P_PINQ(F)
    • Try
      • R(C);CHECK
      • Vars
        • S(f);N_GUARD,P_SPINS(f)::QAR1(F),XS(f)
      • Refutation
        • K(g);P-FLIGHT
  • Actual
    • R(B);
    • Threat
      • QAR1(F)
    • Vars
      • K(g);P-FLIGHT::B(D)+R(C),DCHECK
      • K(g);OGATEB,S_FLIGHT,XR(B)::B(E)
      • S(f);N_GUARD::QAR1(F),XS(f)
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